The steps as posted in this guide are far too cumbersome. This fix is super easy.. here you go
1) Complete Steps 1-15 as shown
2) Scroll all.... the way down
3) Pick it back up at step 34-53 **before putting your new speaker back in, just give the ports a cleaning with a toothpick or the tweezers provided by iFixit.
Total time was maybe 30 mins.. It's easy no worries